Magazine gun with integral breech bolt and hand grip



C. J. MANVILLE BOLT AND HAND GRIP Filed July 26, 1946 MAGAZINE GUN WITHINTEGRAL BREECH May 24, 1949.

Patented May 24, 1949 MAGAZINE GUN WITH INTEGRAL BREECH BOLT AND HANDGRIP Charles J. Manville, Pontiac, Mich, assignor to Lake Erie ChemicalCompany, Cleveland, Ohio, a corporation of Ohio Application July 26,1946, Serial No. 686,523

9 Claims. 1

This invention relates to a magazine type gun adapted to fire gasshells, rocket type shells, flares and similar missiles.

The chief object of this invention is to provide a gun of pistol gripstock type which can be held with one hand and fired with the otherhand.

The chief feature of the invention resides in providing a breech boltaction mechanism whereby the hand used for firing can always be incontact with the trigger, the entire mechanism including the handle andtrigger being bodily movable for cooking as well as shell injectionpurposes, the action being characterized by partial rotation of thebreech bolt mechanism and trigger and handle assembly and the retractionthereof suflicient for shell entry, and then return movement for shellinjection into the gun barrel and for conditioning the gun for firing.

Another feature of the invention resides in arranging the same so thatthe aforesaid action, except for the firing, can be effected whether thegun is locked in the safety position or not.

Another feature of the invention resides in the utilization of aheadless type shell so that the cartridge is muzzle ejected when the gunis fired.

A further feature of the invention resides in the yielding associationof the forepart of a bolt mechanism with a shell to permit the injectionof'the shell without the accidental firing of the same.

Still a further feature of the invention resides in the arrangement ofthe parts whereby the entire breech bolt action mechanism together untilthe shell is fired, the said means yielding I upon firing to permitshell ejection through the muzzle.

Other objects and features of the invention will be set forth more fullyhereinafter.

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims.

In the drawings Fig. 1 is a side elevation of a gun of the characterdescribed showing the same provided with a forward hand grip support, a

2 rearward combination pistol grip and trigger structure and with thestock addition for shoulder firing.

Fig. 2 is a longitudinal sectional view of the gun shown in Fig. 1 withthe shoulder stock and the forward hand grip omitted.

Fig. 3 is an enlarged, detached plan view of a portion of the barrel forthe gun, the barrel being turned end for end and angularly displacedwith respect to the illustration in Fig. 1 to more clearly show thechannel or guide structure provided in the barrel to permit the rotaryand reciproca: tory movement of the breech bolt mechanism and thetrigger assembly, as well as the removal of the same from the gunbarrel.

Fig. 4 is an enlarged transverse sectional view taken on line 4-4 ofFig. 2 and in the direction of the arrows.

In the drawings, and more particularly Figs. 1 and 2, l0 indicates aninner barrel, the latter having an elongated aperture ll therein. Ashorter outer barrel 12 has a similar aperture is, the two aperturesregistering with the mouth of a magazine M having the barrel embracingportion 15. I

This magazine is of spaced confronting channel type and is adapted toreceive a clip structure it within which is mounted a spring ll bearingon a platform it, the spring being compressed when the clip is loadedwith shells S.

When the breech bolt assembly is retracted it will be quite apparentthat the spring l1 forces one of the shells upwardly through theregister ing apertures I l and is into the inner gun barrel, and whenthe breech bolt assembly is moved forwardly the shell thus disposedwithin with the barrel is caused to move forwardly in the same, therebyeffecting a breech loading action.

Forwardly on the outer barrel is a ferrule arrangement is that supportsa, forward hand or pistol grip 2t, whereby the gun may be heldorsupported.

Carried by the forward portion of the inner barrel is an upwardlydirected support and abut ment 2! and a pin 22 therethrough suitablyanchors a channel 23 to the gun barrel.

The rearward end of this channel is tapered downwardly and rearwardlytoward the barrel forming a cam surface 24, and the rearward end 25comprises a tongue seating in a seat formed by the notch 25 formed inthe upper forward end of the outer barrel l2 and the ferrule portion 59.This constitutes the anchorage for the other end of the channel member.

Within the channel member and bearing'on the abutment 2| is a spring 2?bearing at its opposite end on the headed portion 28 of a pin or stem29. The latter bears against one end of a cam member 30 having a portionthat registers in and projects through the elongated slot 32 in theinner gun barrel.

The aforesaid portion 3| constitutes the stop or abutment'of yieldingcharacter for retaining in the barrel the breech injected shell untilsuch time as the shell is fired, whereupon the cam member 30 is pushedforwardly and in so doing the portion 3| is retracted from projecting inthe gun barrel, thereby permitting the discharge of the shell togetherwith the contents thereof.

The means for retaining the clip, in the magazine may be of conventionalcharacter, such as registering apertures 33 and 34 in the clip andmagazine, respectively, in which the hooked end 31 of a latch member 36engages. This latch member 36 is pivotally supported at 35 upon themagazine I 4 and the portion 31 is yieldingly urged into the'apertures33 and 34 by a spring 39 which'bears on the upper extending portion ofthe latch member. The portion 3'? of the latch"mernber.has'a cam" end 38so that the clip H5) in entering the magazine, rocks the latch memberagainstth'e'action of the spring 39, the latter thereafter forcing thehooked end 31 into the'aperture 33 of the clip when it has beenalignedwith the aperture 34.

Adjacentthe portion 40 of the latch member is a-stop'fil that'limits therocking movement of the latch; When the shells from the magazine havebeen exhausted the clip is unlocked by fih'ger'pressure on the portion40 in opposition rearwardly'of the magazine and the inner barrel I 0"iscontinued'to the end of the gun.

Slidably and rotatably mounted upon the rearwardp'ortion of the barrelI6) is a tube 43 havingitsrear end closed "as at 44. This tubecomprises-a portion 'ofthe breech bolt assembly, to which reference willbe had more fully hereinafter. This breech bolt assembly includes apair'of spaced depending arms 45 and 46, the laiter being extendedrearwardly as at 45a, see Ff C 2'.

The arms '45 and 46 are provided with a body structure 48 therebyforming a hand grip and thelatter, as well as the forward arm 45, issuitable apertured as at 47. Pivotally supported at 4911 in the handgripis a trigger member 49, the latter being normally projectedoutwardly and'forwardly through the slot 4'! by means of spring 50.'This trigger has a contact portion 51 formed on its upper rear end.

The tube 43 has an aperture 52.therein that is always'in registrationwith the contact portion 5| on the end'of the trigger. The barrel [0 hasan elongated slot 54, the forward end of which registers with theaperture 52 when the gunis cocked and ready for firing, such positionbeing'shownin Fig. 2.

The breech bolt mechanism proper comprises a tube55 having a rearwardend 56 apertured at 51"to' slidably support the firing pin or rod 58.Thisfirlng pin has mounted thereon a comparatlve'lystrong coil spring 53that bears at one end upon-the end 56iof the tube 55 and the oppositeend"bears upon a sliding guide 60 secured as'at 6'1 to'the firingpin.

Theforward end of tube 55 of the breech bolt mechanism is closed by asleeve 62 that is provided with a channel 53 therein in which the firingpin rod 58 is guided, the forward end of this rod terminating in thefiring pin point 64. This sleeve 62 has an enlarged forward outerportion or head 65.

The tube 55 isprovided withan elongated slot 66 and'a set screw fil'secured to sleeve 62 projects into said slot and slidably connects thesleeve and head 6265 to the tube 55, the sleeve and head constituting aforward closure for the breech bolt'mechanism as well as a guide for thefiring pin.

Interposed-between the sliding guide Gil and the forward'closu-re is alight spring 58, and this normally constrains the sleeve 62 and its head65 forwardly.

When the breech bolt assembly is retracted for shell injection this head65 is withdrawn rear- Wardly suflicient to permit the shell to enter thebarrel H] from the magazine as previously described. Upon'returnof thebreech bolt assemb'ly'to the-firin'g'position theinitial contact-between the magazine ejected -shell and the breech bolt mechanism iseffected at the head 65 and the shell is moved forwardlyun'til itengages the stop'3l'.

When the shell engages the stop 3! the'head 65 moves rearwardly inoppositionto the spring 68 until the head engages th'e'forward end ofthe tube 55 of the breech bolt mechanism.

If the trigger has been released this contact thenresu'lts in thepoint'fiof the firing pin engaging the shell, and if the impactisinsufilcient to fire the shell no actionoccurs. If the impact issufficient the shell is then fired.

Normally, however, the firing pin and rod will be retained in thefullline position, as shown in Fig. 2," and only'moved to thedotted'line position upon'triggerrelease'so that the firing pin doesnot-engage the shell wh'en'the latter engages the stop 3!.

A collar G9'is secured tO'thf1IiI1g pin rod'58 near its rear freeen'd'bythe set screw it).- This collar mounts a radially projected pin l'lslidable in the radial bore 5'2 and normally. projected outwardbyaspring 13. This pin rides in the previously mentioned slot 5eandservesas thesear for 'the'gun. The collar 69is provided with a meansto prevent rotation-thereof.- This means'is illustrated in Fig. 4 ascomprising an integral lug 69a on the collar extending into alongitudinal slotBK! -in: the barrel Hi1 Instead of this expedient thehead of the set screw it may extend beyond the periphery. of the collar69 and slide in a. longitudinal groove or: keyway on the interior ofbarrel Hi.-

It will be recalled that the tube 43 of the breech bolt assemblyincludes the aperture 52 that registers with the slot 54 when the gun iscooked and, it will be seen from Figs. 2 and 4, that the pin or searllseats in this slot and aperture in the cooked position of the gun.

Therefore, when finger pressure is applied to the trigger-49; thecontact portion '5! presses the pin or-sear 'll inwardlyinto itsbore 12against its spring 13 until it clears both the aperture 52 and the slot54; whereupon the collar 39 and the firing pin are carried forwardly bymeans of the spring--59 thus projecting the firing pin point 54 intoshell engagement and firing the latter.

The trigger 49 includes the notch M within the handlerstructureifl;and'in an arcuate slot 15 in saidhandle structure-there is providedafinger piece I6, same being pivoted by a member 11 in said handlestructure.

The pivot member 'l'i extends transversely of the handle structure andthrough the notch M of the trigger. This member H has a flattenedportion 18 which is disposed substantially parallel to, but spaced from,the forward face of the notch M when the member 155 is in its onposition as shown in Fig. 1. This permits sufficient rearward movementof the trigger to cause the contact portion 5! thereof to disengage thepin or sear H from the aperture 52. and the slot 54 thereby releasingthe firing pin so that the spring 59 drives the point 64 thereof againstthe shell in the barrel with sufiicient force to fire the shell. Whenthe member iii is in its off position, illustrated in dotted lines inFig. the arcuate portion of the pivot member l! is closely adjacent theforward face of the notch it so that the" trigger d9 cannot ire movedsufficiently to effect ejection of the locking pin or sear E! from theaperture 52 and the slot 56 for release of the firing pin rod 59.

Referring to Figs. 2, 3 and 4, and especially to Fig. 3, it will be seenthat the barrel it; includes not only the slot 54 but also a slot aswhich extends longitudinally along the barrel parallel with the slot 54but displaced approximately 0 therefrom. The forward end of slot ill]communicates with a transverse slot 85, a portion of the wall connectingthe-slots fill and 8! being inclined as indicated at 82. The rear end ofthe slot to communicates with one end of a transversely extending slot83, the other end of the latter in turn communicating with a slot Mwhich is parallel to the slot to and extends to and through the rearedge of the barrel it.

As shown in 2, the previously mentioned arm 66 is rigidly secured to thetube while the arm 45 is integral with, or rigidly connected to, thetube 55 and extends through the slot ill in the barrel IE2. Therefore,since the arms 55 and 46 are both connected to the handle body member48, the tubes at and 55 are interconnected for movement together whenthe hand grip is manipulated.

Let it be assumed that the gun has been discharged and that it isdesired to prepare the latter for firing again. The hand grip at isfirst moved counterclockwise, as viewed from the rear of the gun,through an angle of approximately 90 thus moving the arm lii through theslot 8! and into the slot 86. The handle M! is then moved longitudinallyto rear thereby retracting the tube 55 this movement continuing untilthe handle Portion 45 is moved as far as possible within the slot 89.During this movement the tube 55 uncovers the aligned apertures H andiii in the barrels Ill and It so that the uppermost shel S inthe clip i5is moved into the interior of the barrel Ill by action of the springl'i. Also. this rearward. movement of the hand grip 45 has caused theclosed end 5'15 of the tube 55 to force thecollar 69 rearwarollycarrying with it the firing pin 64, the pin or sear ll' riding withinthe slot 54.

The hand grip 48 is then moved forwardly to the forward portion of theslot 89. This causes theshell S, which has moved into the bore of thebarrel Ill, to be moved forwardly therein until its forward edge engagesthe yieldable stop or abutment 31, the head 65 yielding slightly sothatthe shell is firmly engaged with the abutmer t 3lwith0uteausing thelatter to move ap-- pElfibJy.,.,;As the tube 55 moves forwardly, un-

der action of the hand grip 48, the collar 69 also moves in a forwarddirection until the pin or sear ll engages the forward end of theaperture or slot 54, thus terminating the forward movement of the collar69. The additional'forward movement of the hand grip, and hence of thetube 55, effects a separation between the wall 5 5 of the latter and thecollar 69 thereby compressing the spring 59.

At its extreme forward position the hand grip A8 is rotated back to itsinitial position, the arm i-5 moving within the slot 8i therebyretaining the parts in the positions just mentioned. At this time theopening 52 in the tube 43 aligns with the pin or sear ll so that thelatter may seat therein. The lower portion of the tube I2 is providedwith a slot, notch or recess in which the upper forward part of thetrigger 49 seats when the handle 48 has been returned to its initialposition. This movement of the trigger into the notch or recess 85 thusindicates that the hand grip is in its proper position for firing andalso insures that the portion 52 is spaced below the pin or sear H.

If the safety member iii is disposed in its off position, the gun cannotbe fired although it is cooked and a shell is in position for firing.Movement of the safety member iii to its on position frees the trigger(it so that when the latter is squeezed, the portion til releases thepin H thus allowing the spring 59 to drive the firing pin against therear of the shell S which is positioned in the barrel Hi. This fires theshell and the forces created thereby propel the entire shell forwardlyfrom the barrel, the stop or abutment 3| yielding to permit this action.

Since the pin or sear ll normally rides within the slot 54, the boltmechanism cannot be removed therefrom even though the hand grip 48 berotated to bring the arm 45 thereof into alignment with the slot 84 whenthe handle is retracted. If it be desired to disassemble the boltmechanism and the hand grip from the gun it is, however, only necessaryto disengage the pin or sear H from the slot 5%. This is preferablyeffected by removing the trigger from the hand grip 48 thus renderingthe end of the pin or sear H accessible. The sleeve 53 is then rotatedapproximately and retracted as described before for placing a shellwithin the barrel and cooking the gun. However, when the arm a5 isdisposed opposite the slot 83 it is then moved therethrough byadditional rotation of the hand grip at which time the pin or sear itmay be depressed by a tool inserted through the opening provided by theremoval of the trigger. This frees the pin or sear ill from the slot 5%so that the arm 45 may then be moved through the slot 8 5 thuswithdrawing the entire bolt mechanism from the barrel. Assembly iseffected by a reverse operation.

It will be noted from the foregoing that instead of the operationsnecessary for firing a magazine type gun of say the Springfield type,which requires removal of the hand from the trigger to eiTectmanipulation of the bolt and then return of the hand from the bolt tothe trigger to efi'ect firing, the present invention permits the firinghand to remain in contact with the trigger mechanism for gun cocking,shell injection and firing, thus expediting the rate of fire of the gun.

Whenever the gun is to be fired from the shoulder there is provided awire stock Qt, see Fig," 1,

shown in the general outline of a stock, the ends being anchored to asleeve 9i that slipsover the" 7, outer 'tube 43f0fth9'b1880h boltmechanism and trigger assembly;

Thissleeve has a: tongue 93 struck-outwardly therefrom thus providing anotch 92 in which the rearwardportion 46a of'the arm 46 fits, the tongue93 exten'ding over the rearward part of the portion @811. This preventsrelative rotation of the stock, with respect to the bolt actionmechanism and trigger assembly, so that when the gun is thus equippedthe last mentioned construction, together with the additional stock,also is caused topartially rotate "and recede and then advance and'rotate for gun loading and firing purposes. In other words, the'g-unmust be removed from the shoulder, when thus equipped, for repeatedfiring.

While the invention has been illustrated and described in great detailin the drawings and foregoing description, the sarne is to be consideredas'illustrative and not restrictive in character.

The several modifications described herein as well as others which willreadily suggest them selves to persons skilled in this art, all areconsidered to be within the broad scope of the invention, referencebeing had to the appended claims.

The'invention claimed is:

1. In a gun of the type described the combination of a barrel, 2, breechbolt mechanism slidable within said barrel to effect insertion of ashell into said barrel and positioning of the shell for firing, the'said breech bolt mechanism including a firing pin for engaging andfiring a shell positioned in saidbarrel, a member fixed to said firingpin adjacent the rear end of the latter and slidable within said barrel,a sear carried by said member and adapted to project into an elongatedaperture in said barrel; a rear hand grip for said gun connected withsaid bolt for actuation thereof'wh'ich:actuation also disposes said searwithin said aperture adjacent one "end thereof thereby cocking saidfiring pin, a trigger carried by said hand grip and adapted to beactuated only when said hand grip has been returned to its originalposition to effect disengagement of said sear'from said aperture therebyreleasing the said firing pin for movement into firing engagement withthe shell in said barrel.

2. In a magazine type gun the combination of a barrel, a shell magazinecommunicating with said barrel intermediate the ends thereof, a breechbolt mechanism slidable within said barrel to selectively uncover andcover the communication between said magazine and barrel for effectingdelivery of a shell from the latter into the former and for positioninga delivered shell for firing, the said breech bolt mechanism including afiring pin for engaging and firing a shell positioning in said barrel, amember fixed to said firing pin adjacent the rear end of the latter andslidable Within said barrel, a scar carried by said member and adaptedto p-roj ect into an elongated aperture in said barrel, a rear hand gripfor said gun connected with said bolt for actuation thereof whichactuation disposes said sear within said aperture adjacent one endthere's" cocking said firing pin, a trigger carried by said hand gripand adapted to be actuated only when said hand grip hasbeen returned toits original position to effect disengagement of said sear from saidaperture thereby releasing the said firing pin for movement into firingengagement with the shell in said barrel, whereby loading and firing ofthe gun may be effected without removing the hand from the hand grip.-

3. Ina gun'for firingrimless shellsthe combination of a barrel,yieldable means normally extending inwardly of the barrel for-wardlyofthe breech thereof to engage a shell adjacent its forward end, a breechbolt mechanism mounted for rotation and reciprocation in said barrel;the said breech bolt mechanism including a firing pin and a searconnected to said pin and cooperating with a slot in said barrel tocontrol cocking and release of said pin, a hand grip connected to saidbolt and extending exteriorly of said barrel for effecting movement ofsaid breech bolt mechanism thereby positioning a shell against saidmeans and cooking said firing pin, and atrigger carried by said handgrip and cooper ating with said sear when the hand grip hasbeen returnedto its original position after positioning a shell and cooking saidfiring pin to release the latter for firing said shell, the said meansyielding under the force exerted by the fired shell thereby effectingmuzzle discharge of the shell casing.

4. In a gun for firing rimless shells the combination of a barrel; ayieldable shell abutment normally extending inwardly of thebarrel'forwardly of the breech thereof to engage a portion of theforward end of a shell; 9, breech bolt mechanism mounted for rotationand reciprocation in said barrel, the said breech bolt mechanismincluding a yieldable forward portion for firmly engaging a shell withsaid abutment and without displacement of the latter, a'firin'g pin, anda sear connected to said pin and cooperatingwith a slot in said barrelto control cooking and release of said pin; a hand grip connected tosaid bolt and extending exteriorly of said barrel for effecting movementof said breech bolt mechanism to position a shell against said abutmentand to cock said firing pin; and a trigger carried by said hand grip andcooperating with said sear when the hand grip has been returned to itsoriginal position after positioning a shell and cooking said firing pinto release the latter for firing said shell, thesaid abutment yieldingunder the force exerted by the fired shell thereby efiecting muzzledischarge of the shellcasing;

5. The combination as described in claim 4 and in which said breech boltmechanism comprises a tubular member having one end closed except for acentral aperture and the other'end of said member having a headed sleevewith a portion slidable in said member to provide the said yieldableportion, the said firing pin being slidably supported in-the saidaperture and the bore of said sleeve with one end extending exteriorlyof the former and connected to said sear, the other end of saidpin beingexposable' forwardly of said head to engage and fire a'shell, meansrigid with said firing pin and slidable within said tubular member, afirst compression spring between said means and the closed end 'of saidmember, and a second compression spring between said means and saidsleeve.

6. In a gun of the type described the combination of a barreL'a breechbolt mechanism slidable within said barrel to effect insertion of ashell into said barrel and positioning of the shell for firing, the saidbreech bolt mechanism including a firing pin for engaging and firing ashell positioned in said barrel, a member fixed to said firing pinadjacent its rear end and slidable within said barrel, a sear carried bysaid m'ember'and adapted to project into an elongated aperture in saidbarrel, a tubular member slidable and rotatably supported upon the rearportion of said barrel, a rear hand grip rigidly connected to saidtubular member with a portion of said hand grip extending through a slotin said barrel and connected to said bolt mechanism for actuationthereof by sequential partial rotation and reciprocation of said handgrip which actuation disposes said sear within said aperture adjacentone end thereof thereby cocking said firing pin, the said tubular memberhaving an aperture therethrough aligned with said sear when the saidhand grip has been returned to its initial position after cooking thefiring pin, a trigger carried by said hand grip and having a portionadapted to extend through the aperture in said tubular member when thetrigger is actuated to efiect disengagement of said sear from saidlongated aperture thereby releasing the said firing pin for movementinto firing engagement with the shell in said barrel.

7. The combination as defined in claim 6 and further comprising ayieldable means normally extending inwardly of said barrel forwardly ofsaid breech bolt mechanism to engage a shell adjacent its front edge,the said means yielding under the force exerted by the fired shellwhereby the casing of a rimless shell is discharged from the muzzle ofsaid barrel.

8. In a gun of the type described the combination of a barrel, a shellmagazine communicating with said barrel intermediate the ends thereof, abreech bolt mechanism slidable within said barrel to selectively uncoverand cover the communication between said magazine and barrel forefiecting delivery of a shell from the latter into the former and toposition a delivered shell for firing, the said breech bolt mechanismincluding a firing pin for engaging and firing a shell positioned insaid barrel, a member fixed to said firing pin adjacent the rear end ofthe latter and slidable within said barrel, a sear carried by saidmember and adapted to project into an elongated aperture in said barrel,a tubular member slidably and rotatably supported upon the rear portionof said barrel, a rear hand grip rigidly connected to said tubularmember with a portion of said hand grip extending through a, slot insaid barrel and connected to said bolt mechanism for actuation thereofby sequential partial rotation and reciprocation of said hand grip whichactuation positions a shell within said barrel and disposes said searwithin said elongated aperture adjacent one end thereof thereby cookingthe said firing pin, the said tubular member having an aperturetherethrough aligned with said sear when the said hand grip has beenreturned to its initial position, a trigger carried, by said hand gripand having a portion adapted to extend through the aperture in saidtubular member when the trigger is actuated to effect disengagement ofsaid sear from said elongated aperture thereby releasing the said firingpin for movement into firing engagement With the shell in said barrel.

9. The combination as defined in claim 8 and further comprising ayieldable means normally extending inwardly of said barrel forwardly ofsaid breech bolt mechanism to engage a portion of the forward edge of ashell thereby locating the shell in proper position for firing, the saidmean yielding under the force exerted by the firing shell whereby thecasing of a rimless shell is discharged from the muzzle of said barrel.

CHARLES J. MANVILLE.

REFERENCES CITED The following references are of record in the file ofthis patent:

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